This survey, conducted on overland or marine pipelines, determines the lines external coating quality over a predetermined distance, normally 300 feet (100 m) on land and 50 feet (15m) under water. Can be used on long pipelines where further investigation is required. Suspended or abandoned pipelines can be checked to ascertain whether to re-license or purchase those lines from another operator or owner: Has been used to assess external damage to the pipelines due to natural water erosion and above ground damage due to farm cultivation or heavy equipment construction.

External Coating Anomaly Pinpoint Survey

This survey precisely locates the sites where coating damage has occurred within a section of pipeline previously checked using the above C-Scan equipment.

The survey technique has been used extensively on critical or environmentally sensitive line sections such as plant inlet headers and discharge piping, river banks and in high population areas.

Serves as a means of determining whether the pipeline owner initiates further more expensive tests such as "Smart Pigging".